.banner {
  display: flex;
  justify-content: center;
  height: 680px;
  background-image: url('../assets/image/about/about_bg_img.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: #fff;
  padding-top: 225px;
}

.banner-content {
  width: 1440px;
}

.banner-content-title {
  font-size: 60px;
  font-weight: 500;
}


.banner-content-subtitle {
  font-size: 28px;
  color: #e4e4e4;
  margin-top: 14px;
}

.banner-content-slogan {
  margin-top: 32px;
  font-weight: 500;
  font-size: 36px;
  color: #ffffff;
}

.nav-bar-box {
  margin-top: 40px;
  margin-bottom: 40px;
}

.nav-bar-box img {
  width: 18px;
  height: 18px;
  margin-right: 4px;
}

.nav-bar-box {
  font-size: 14px;
  color: #666;
  line-height: 20px;
}

.nav-bar-box span {
  color: #999;
}

.double-title {
  font-weight: 500;
  font-size: 36px;
  line-height: 48px;
  color: #1A1A1A;
}

.double-title span {
  color: #FFC637;
}

/* 企业介绍 */
.introduce-box {
  max-width: 1448px;
  padding: 0 20px;
}

.introduce-top {
  display: flex;
  gap: 64px;
}

.top-container {
  flex: 1;
  max-width: 608px;
  padding-top: 32px;
}

.top-container .detail {
  font-weight: 500;
  font-size: 16px;
  color: #666666;
  line-height: 26px;
}

.introduce-top .img-box {
  flex: 1;
  overflow: hidden;
  border-radius: 12px;
}

.introduce-top .img-box img {
  object-fit: cover;
  /* 保持图片比例填充 */
  transition: transform 0.3s ease;
  /* 添加过渡动画 */
}

.introduce-top .img-box img:hover {
  cursor: pointer;
  transform: scale(1.1);
  /* 鼠标悬停时放大1.1倍 */
}

.count-box {
  display: flex;
  justify-content: space-between;
  margin-top: 77px;
  text-align: left;
  flex-wrap: wrap;
  padding-left: 20px;
  row-gap: 46px;
}

.count-item {
  width: 50%;
}

.count-item .number {
  font-weight: 500;
  font-size: 60px;
  line-height: 60px;
  color: #FFC637;
}

.count-item .digits {
  font-size: 36px;
  line-height: 60px;
  color: #FFC637;
}

.count-item .small {
  font-size: 16px;
  color: #4B5563;
  line-height: 24px;
  margin-top: 14px;
}

.introduce-bottom {
  font-weight: 500;
  font-size: 16px;
  color: #666666;
  line-height: 26px;
  margin-top: 64px;
}

.introduce-bottom div {
  margin-bottom: 32px;
}

/* 发展沿线 */
.time-line-box {
  background-image: url('../assets/image/about/time_line_bg.png');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.time-line-container {
  max-width: 1448px;
  margin: 80px auto 0;
  padding: 94px 0 94px;
  position: relative;
}

.time-line-title {
  margin-left: 20px;
  margin-bottom: 30px;
}

.timeline-scroll-container {
  overflow-x: hidden;
  padding: 0;
  position: relative;
  -ms-overflow-style: none;
  /* IE和Edge */
  scrollbar-width: none;
  background-image: url('../assets/image/about/time_line.png');
  background-position: center;
  background-size: auto auto;
  background-repeat: no-repeat;
}

.timeline-items {
  display: flex;
  position: relative;
  width: max-content;
  padding: 0 100px;
}

.timeline-item {
  position: relative;
  width: 448px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.time-item-line {
  width: 21px;
  height: 225px;
  background-image: url('../assets/image/about/time_line_line.png');
  background-size: auto;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.timeline-item.top {
  margin-bottom: 225px;
  margin-left: -224px;
}

.timeline-item.bottom {
  margin-top: 225px;
  margin-left: -224px;
}

.timeline-item.bottom:first-child {
  margin-left: 0;
}

.time-line-detail {
  flex: 1;
  padding: 97px 0 34px 37px;
  color: #333333;
  font-weight: bold;
}

.time-line-detail .time-box {
  font-size: 2.25rem;
  line-height: 3.13rem;
  margin-bottom: 0.25rem;
}

.time-line-detail .time-box span {
  font-size: 1.25rem;
  line-height: 1.88rem;
}

.time-line-detail .detail {
  font-size: 0.88rem;
  line-height: 1.25rem;
}

.arrow-box {
  position: absolute;
  width: 100%;
  max-width: 1644px;
  height: 50px;
  bottom: 174px;
}

.arrow-box .arrow {
  width: 50px;
  height: 50px;
  border-radius: 50px;
  background-color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.arrow-box .arrow:hover {
  background-color: #FFC637;
}

/* 企业文化 */
.culture-box {
  width: 100%;
  max-width: 1448px;
  padding: 80px 20px 84px;
}

.culture-item {
  font-weight: 500;
  color: #1A1A1A;
}

.culture-box .top {
  transition: all 0.3s ease;
}

.culture-item .iconfont {
  font-size: 38px;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.culture-item .title {
  font-size: 1.5rem;
  line-height: 1.75rem;
  transition: all 0.3s ease;
}

.culture-item .subtitle {
  max-width: 300px;
  margin: 0.69rem auto 0;
  font-weight: 500;
  font-size: 0.88rem;
  color: #4B5563;
  line-height: 1.25rem;
}

.culture-item:hover {
  cursor: pointer;

}

.culture-item:hover .top{
  color: #FFC637;
  transform: translateY(-8px) scale(1.1);
}


@media (max-width: 1680px) {
  .banner-content {
    width: 1180px;
  }
}

@media (max-width: 1280px) {
  .banner-content {
    width: initial;
  }
}

@media screen and (max-width: 1200px) {
  .banner-content-title {
    font-size: 55px;
  }

  .banner-content-subtitle {
    font-size: 18px;
  }

  .banner-content-slogan {
    font-size: 23px;
  }

  .nav-bar-box {
    margin-top: 30px;
    margin-bottom: 44px;
  }

  .introduce-top {
    gap: 32px;
    margin-top: 10px;
  }

  .top-container {
    max-width: 586px;
    padding-top: 22px;
  }

  .count-box {
    margin-top: 45px;
    padding-left: 64px;
    row-gap: 32px;
  }

  .count-item .number {
    font-size: 36px;
    line-height: 40px;
  }

  .count-item .digits {
    font-size: 24px;
    line-height: 40px;
  }

  .count-item .small {
    margin-top: 8px;
  }

  .introduce-bottom {
    margin-top: 30px;
  }

  .time-line-container {
    margin: 40px auto 0;
    padding: 80px 0 128px;
  }

  .arrow-box {
    bottom: 48px;
    padding: 0 40px;
  }
}

@media screen and (max-width: 900px) {
  .banner {
    height: 428px;
    padding-top: 125px;
  }

  .banner-content-title {
    font-size: 44px;
    line-height: 50px;
  }

  .banner-content-subtitle {
    font-size: 13px;
    line-height: 20px;
  }

  .banner-content-slogan {
    font-size: 14px;
  }

  .introduce-box {
    padding: 0 30px;
  }

  .nav-bar-box {
    margin: 30px 0;
  }

  .double-title {
    font-size: 25px;
  }

  .introduce-top {
    display: block;
  }

  .top-container {
    max-width: 100%;
    padding-top: 0;
    margin-top: 20px;
  }

  .count-box {
    display: flex;
    justify-content: space-around;
    margin-top: 30px;
    text-align: center;
    flex-wrap: wrap;
    padding: 0;
    row-gap: auto;
  }

  .count-item {
    width: auto;
  }

  .introduce-top .img-box {
    max-width: 736px;
    margin: 30px auto 0;
  }

  .time-line-container {
    padding: 40px 0 78px;
  }
  .time-line-title {
    margin-left: 30px;
  }

  /* 企业文化 */
  .culture-box {
    padding: 40px 30px 40px;
  }
}

@media screen and (max-width: 768px) {
  .timeline-scroll-container {
    overflow-x: scroll;
  }

  .time-line-container {
    padding: 2.5rem 0 2.5rem;
  }

  .timeline-items {
    padding: 0;
  }

  .culture-item .iconfont {
    color: #FFC637;
  }
}

@media (max-width: 620px) {
  .banner-content-title span:first-child {
    display: block;
  }

  .banner-content-subtitle span:first-child {
    display: block;
  }

  .banner-content {
    padding: 0 33px;
  }

  .banner {
    height: 420px;
    padding-top: 125px;
  }

  .introduce-box {
    padding: 0 15px;
  }

  .nav-bar-box {
    margin-top: 10px;
    margin-bottom: 40px;
  }

  .double-title {
    font-size: 25px;
    line-height: 25px;
  }

  .top-container {
    margin-top: 30px;
  }

  .count-box {
    margin-top: 30px;
    text-align: left;
    flex-wrap: wrap;
    padding: 0 8px;
    row-gap: 20px;
  }

  .count-item {
    width: 50%;
  }

  .time-line-container {
    margin: 40px auto 0;
    padding: 40px 0 50px;
  }

  .timeline-item {
    width: 300px;
  }

  .timeline-item.top {
    margin-bottom: 225px;
    margin-left: -150px;
  }
  
  .timeline-item.bottom {
    margin-top: 225px;
    margin-left: -150px;
  }

  .culture-item {
    pointer-events: none;
  }
}

@media screen and (max-width: 576px) {
  .banner-content-title {
    font-size: 26px;
    line-height: 30px;
  }

  .banner-content-subtitle {
    font-size: 13px;
    line-height: 20px;
    margin-top: 4px;
  }

  .banner-content-slogan {
    font-size: 14px;
    margin-top: 15px;
  }

  .banner-content {
    padding: 0 33px;
  }

  .banner {
    height: 420px;
    padding-top: 155px;
  }
}